/* 深色主题样式 - 优雅的深色配色方案 */
[data-theme="dark"] {
    /* 基础颜色变量 - 更和谐的深色调色板 */
    --bs-body-bg: #0f1419;           /* 深蓝灰色背景 */
    --bs-body-color: #e6e8eb;        /* 柔和的浅色文字 */
    --bs-primary: #3b82f6;           /* 清晰的蓝色 */
    --bs-secondary: #64748b;         /* 中性灰色 */
    --bs-success: #10b981;           /* 清新的绿色 */
    --bs-info: #06b6d4;              /* 明亮的青色 */
    --bs-warning: #f59e0b;           /* 温暖的橙色 */
    --bs-danger: #ef4444;            /* 柔和的红色 */
    --bs-light: #1e293b;             /* 深色的"浅色" */
    --bs-dark: #f1f5f9;              /* 浅色的"深色" */

    /* 自定义深色主题变量 */
    --dark-bg-primary: #0f1419;      /* 主背景色 */
    --dark-bg-secondary: #1e293b;    /* 次要背景色 */
    --dark-bg-tertiary: #334155;     /* 第三级背景色 */
    --dark-border: #334155;          /* 边框颜色 */
    --dark-text-primary: #e6e8eb;    /* 主要文字颜色 */
    --dark-text-secondary: #94a3b8;  /* 次要文字颜色 */
    --dark-text-muted: #64748b;      /* 静音文字颜色 */
}

/* 深色主题下的基础样式 */
[data-theme="dark"] body {
    background: linear-gradient(135deg, #0f1419 0%, #1e293b 100%);
    color: var(--dark-text-primary);
    min-height: 100vh;
}

/* 标题和重要文本 */
[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6 {
    color: var(--dark-text-primary) !important;
}

/* 首页特殊样式 */
[data-theme="dark"] .hero-title,
[data-theme="dark"] .display-4,
[data-theme="dark"] .display-5,
[data-theme="dark"] .display-6 {
    color: var(--dark-text-primary) !important;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

/* 副标题和描述文本 */
[data-theme="dark"] .lead,
[data-theme="dark"] .subtitle {
    color: var(--dark-text-secondary) !important;
}

/* 强调文本 */
[data-theme="dark"] strong,
[data-theme="dark"] b {
    color: var(--dark-text-primary);
}

/* 小标题 */
[data-theme="dark"] small {
    color: var(--dark-text-muted);
}

/* 首页特殊元素 */
[data-theme="dark"] .hero-section {
    background: linear-gradient(135deg, var(--dark-bg-primary), var(--dark-bg-secondary));
}

[data-theme="dark"] .hero-section h1,
[data-theme="dark"] .hero-section .display-4 {
    color: var(--dark-text-primary) !important;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .hero-section p,
[data-theme="dark"] .hero-section .lead {
    color: var(--dark-text-secondary) !important;
}

/* 主要内容区域 */
[data-theme="dark"] .main-content {
    color: var(--dark-text-primary);
}

/* 容器背景 */
[data-theme="dark"] .container {
    color: var(--dark-text-primary);
}

/* 行和列 */
[data-theme="dark"] .row {
    color: var(--dark-text-primary);
}

[data-theme="dark"] .col,
[data-theme="dark"] [class*="col-"] {
    color: var(--dark-text-primary);
}

/* 导航栏 - 优雅的深色导航 */
[data-theme="dark"] .navbar {
    background: rgba(15, 20, 25, 0.95) !important;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--dark-border);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .navbar-brand {
    color: var(--bs-primary) !important;
    font-weight: 700;
}

[data-theme="dark"] .navbar-nav .nav-link {
    color: var(--dark-text-primary) !important;
    transition: all 0.3s ease;
    border-radius: 6px;
    margin: 0 2px;
}

[data-theme="dark"] .navbar-nav .nav-link:hover {
    color: #3b82f6 !important;
    background-color: rgba(59, 130, 246, 0.1);
    transform: translateY(-1px);
}

[data-theme="dark"] .navbar-toggler {
    border-color: var(--dark-border);
}

[data-theme="dark"] .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28230, 232, 235, 0.75%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='m4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* 卡片 - 现代化的深色卡片设计 */
[data-theme="dark"] .card {
    background: linear-gradient(145deg, var(--dark-bg-secondary), #253344);
    border: 1px solid var(--dark-border);
    color: var(--dark-text-primary);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

[data-theme="dark"] .card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .card-header {
    background: linear-gradient(135deg, var(--dark-bg-tertiary), #3f4f5f);
    border-bottom: 1px solid var(--dark-border);
    color: var(--dark-text-primary);
    font-weight: 600;
}

[data-theme="dark"] .card-body {
    background: rgba(30, 41, 59, 0.5);
}

[data-theme="dark"] .card-footer {
    background: var(--dark-bg-secondary);
    border-top: 1px solid var(--dark-border);
    color: var(--dark-text-secondary);
}

/* 表单控件 - 精致的深色表单设计 */
[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
    background: linear-gradient(145deg, var(--dark-bg-secondary), #2a3441);
    border: 1px solid var(--dark-border);
    color: var(--dark-text-primary);
    transition: all 0.3s ease;
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus {
    background: linear-gradient(145deg, #253344, var(--dark-bg-secondary));
    border-color: var(--bs-primary);
    color: var(--dark-text-primary);
    box-shadow: 0 0 0 0.2rem rgba(99, 102, 241, 0.25);
    transform: translateY(-1px);
}

[data-theme="dark"] .form-control::placeholder {
    color: var(--dark-text-muted);
}

[data-theme="dark"] .form-label {
    color: var(--dark-text-primary);
    font-weight: 500;
}

[data-theme="dark"] .form-text {
    color: var(--dark-text-secondary);
}

/* 按钮 - 高对比度的深色按钮设计 */
[data-theme="dark"] .btn-primary {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    border-color: #3b82f6;
    color: #ffffff !important;
    font-weight: 500;
    box-shadow: 0 2px 10px rgba(59, 130, 246, 0.3);
}

[data-theme="dark"] .btn-primary:hover {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    border-color: #2563eb;
    color: #ffffff !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}

[data-theme="dark"] .btn-outline-primary {
    color: #3b82f6;
    border-color: #3b82f6;
    background: transparent;
    font-weight: 500;
}

[data-theme="dark"] .btn-outline-primary:hover {
    background: #3b82f6;
    border-color: #3b82f6;
    color: #ffffff !important;
    transform: translateY(-1px);
}

[data-theme="dark"] .btn-outline-secondary {
    color: var(--dark-text-primary);
    border-color: var(--dark-border);
    background: transparent;
}

[data-theme="dark"] .btn-outline-secondary:hover {
    background: var(--dark-bg-tertiary);
    border-color: var(--dark-bg-tertiary);
    color: var(--dark-text-primary);
    transform: translateY(-1px);
}

[data-theme="dark"] .btn-success {
    background: linear-gradient(135deg, #10b981, #059669);
    border-color: #10b981;
    color: #ffffff !important;
    font-weight: 500;
}

[data-theme="dark"] .btn-success:hover {
    background: linear-gradient(135deg, #059669, #047857);
    color: #ffffff !important;
}

[data-theme="dark"] .btn-warning {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    border-color: #f59e0b;
    color: #ffffff !important;
    font-weight: 500;
}

[data-theme="dark"] .btn-warning:hover {
    background: linear-gradient(135deg, #d97706, #b45309);
    color: #ffffff !important;
}

[data-theme="dark"] .btn-danger {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    border-color: #ef4444;
    color: #ffffff !important;
    font-weight: 500;
}

[data-theme="dark"] .btn-danger:hover {
    background: linear-gradient(135deg, #dc2626, #b91c1c);
    color: #ffffff !important;
}

/* 警告框 - 优雅的深色警告框设计 */
[data-theme="dark"] .alert {
    border-radius: 12px;
    border: none;
    backdrop-filter: blur(10px);
}

[data-theme="dark"] .alert-warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(217, 119, 6, 0.1));
    border-left: 4px solid var(--bs-warning);
    color: #fbbf24;
}

[data-theme="dark"] .alert-info {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(14, 165, 233, 0.1));
    border-left: 4px solid var(--bs-info);
    color: #38bdf8;
}

[data-theme="dark"] .alert-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(5, 150, 105, 0.1));
    border-left: 4px solid var(--bs-success);
    color: #34d399;
}

[data-theme="dark"] .alert-danger {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.15), rgba(220, 38, 38, 0.1));
    border-left: 4px solid var(--bs-danger);
    color: #f87171;
}

[data-theme="dark"] .alert-primary {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(88, 85, 235, 0.1));
    border-left: 4px solid var(--bs-primary);
    color: #a5b4fc;
}

/* 表格 */
[data-theme="dark"] .table {
    color: #e9ecef;
}

[data-theme="dark"] .table-striped > tbody > tr:nth-of-type(odd) > td,
[data-theme="dark"] .table-striped > tbody > tr:nth-of-type(odd) > th {
    background-color: #2d3748;
}

/* 模态框 */
[data-theme="dark"] .modal-content {
    background-color: #2d3748;
    color: #e9ecef;
}

[data-theme="dark"] .modal-header {
    border-bottom-color: #4a5568;
}

[data-theme="dark"] .modal-footer {
    border-top-color: #4a5568;
}

/* 下拉菜单 - 优雅的下拉设计 */
[data-theme="dark"] .dropdown-menu {
    background: linear-gradient(145deg, var(--dark-bg-secondary), #253344);
    border: 1px solid var(--dark-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

[data-theme="dark"] .dropdown-item {
    color: var(--dark-text-primary);
    transition: all 0.3s ease;
    border-radius: 8px;
    margin: 2px 4px;
}

[data-theme="dark"] .dropdown-item:hover,
[data-theme="dark"] .dropdown-item:focus {
    background: linear-gradient(135deg, var(--bs-primary), #5855eb);
    color: white;
    transform: translateX(4px);
}

[data-theme="dark"] .dropdown-header {
    color: var(--dark-text-secondary);
    font-weight: 600;
}

[data-theme="dark"] .dropdown-divider {
    border-color: var(--dark-border);
    opacity: 0.3;
}

/* 分页 - 现代化的分页设计 */
[data-theme="dark"] .pagination {
    gap: 4px;
}

[data-theme="dark"] .page-link {
    background: linear-gradient(145deg, var(--dark-bg-secondary), #253344);
    border: 1px solid var(--dark-border);
    color: var(--dark-text-primary);
    border-radius: 8px;
    transition: all 0.3s ease;
}

[data-theme="dark"] .page-link:hover {
    background: linear-gradient(135deg, var(--bs-primary), #5855eb);
    border-color: var(--bs-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

[data-theme="dark"] .page-item.active .page-link {
    background: linear-gradient(135deg, var(--bs-primary), #5855eb);
    border-color: var(--bs-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

[data-theme="dark"] .page-item.disabled .page-link {
    background: var(--dark-bg-secondary);
    border-color: var(--dark-border);
    color: var(--dark-text-muted);
}

/* 视频卡片特殊样式 - 精美的视频卡片 */
[data-theme="dark"] .video-card {
    background: linear-gradient(145deg, var(--dark-bg-secondary), #253344);
    border: 1px solid var(--dark-border);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

[data-theme="dark"] .video-card:hover {
    background: linear-gradient(145deg, #253344, var(--dark-bg-tertiary));
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    border-color: var(--bs-primary);
}

/* 搜索框 - 现代化的搜索设计 */
[data-theme="dark"] .search-container {
    background: linear-gradient(145deg, var(--dark-bg-secondary), #253344);
    border: 1px solid var(--dark-border);
    border-radius: 25px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .search-container:focus-within {
    border-color: var(--bs-primary);
    box-shadow: 0 0 0 0.2rem rgba(99, 102, 241, 0.25);
}

/* 搜索输入框 */
[data-theme="dark"] .search-input {
    background: transparent !important;
    border: none !important;
    color: var(--dark-text-primary) !important;
    box-shadow: none !important;
}

[data-theme="dark"] .search-input::placeholder {
    color: var(--dark-text-muted) !important;
}

[data-theme="dark"] .search-input:focus {
    background: transparent !important;
    border: none !important;
    color: var(--dark-text-primary) !important;
    box-shadow: none !important;
    outline: none !important;
}

/* 搜索按钮 */
[data-theme="dark"] .search-btn {
    background: linear-gradient(135deg, #3b82f6, #2563eb) !important;
    border: none !important;
    color: white !important;
}

[data-theme="dark"] .search-btn:hover {
    background: linear-gradient(135deg, #2563eb, #1d4ed8) !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

/* 输入组 */
[data-theme="dark"] .input-group {
    background: transparent;
}

[data-theme="dark"] .input-group .form-control {
    background: transparent;
    border: none;
    color: var(--dark-text-primary);
}

[data-theme="dark"] .input-group .form-control:focus {
    background: transparent;
    border: none;
    box-shadow: none;
}

/* 文本颜色 - 和谐的文本层次 */
[data-theme="dark"] .text-muted {
    color: var(--dark-text-muted) !important;
}

[data-theme="dark"] .text-secondary {
    color: var(--dark-text-secondary) !important;
}

[data-theme="dark"] .text-primary {
    color: var(--bs-primary) !important;
}

/* 边框 - 统一的边框颜色 */
[data-theme="dark"] .border {
    border-color: var(--dark-border) !important;
}

[data-theme="dark"] .border-top {
    border-top-color: var(--dark-border) !important;
}

[data-theme="dark"] .border-bottom {
    border-bottom-color: var(--dark-border) !important;
}

/* 背景色 - 层次分明的背景 */
[data-theme="dark"] .bg-light {
    background: linear-gradient(145deg, var(--dark-bg-secondary), #253344) !important;
    color: var(--dark-text-primary);
}

[data-theme="dark"] .bg-white {
    background: linear-gradient(145deg, var(--dark-bg-secondary), #253344) !important;
    color: var(--dark-text-primary);
}

[data-theme="dark"] .bg-primary {
    background: linear-gradient(135deg, var(--bs-primary), #5855eb) !important;
}

/* 链接 - 优雅的链接样式 */
[data-theme="dark"] a {
    color: var(--bs-primary);
    transition: all 0.3s ease;
}

[data-theme="dark"] a:hover {
    color: #a5b4fc;
    text-decoration: none;
}

/* 主题切换按钮样式 - 精美的切换按钮 */
.theme-toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0.75rem;
    border-radius: 50%;
    transition: all 0.3s ease;
    width: 44px;
    height: 44px;
}

.theme-toggle:hover {
    background: rgba(59, 130, 246, 0.1);
    transform: scale(1.1);
}

[data-theme="dark"] .theme-toggle:hover {
    background: rgba(59, 130, 246, 0.2);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

.theme-toggle .icon {
    width: 1.25rem;
    height: 1.25rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 图标切换动画 - 更流畅的动画效果 */
.theme-toggle .sun-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
    color: #f59e0b;
}

.theme-toggle .moon-icon {
    opacity: 0;
    transform: rotate(-90deg) scale(0.5);
    position: absolute;
    color: #3b82f6;
}

[data-theme="dark"] .theme-toggle .sun-icon {
    opacity: 0;
    transform: rotate(90deg) scale(0.5);
}

[data-theme="dark"] .theme-toggle .moon-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

/* 主题切换按钮的发光效果 */
[data-theme="dark"] .theme-toggle {
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
}

/* 输入组 */
[data-theme="dark"] .input-group-text {
    background-color: #374151;
    border-color: #4a5568;
    color: #e9ecef;
}

/* 徽章 */
[data-theme="dark"] .badge {
    color: #1a1a1a;
}

/* 进度条 */
[data-theme="dark"] .progress {
    background-color: #374151;
}

/* 列表组 */
[data-theme="dark"] .list-group-item {
    background-color: #2d3748;
    border-color: #4a5568;
    color: #e9ecef;
}

[data-theme="dark"] .list-group-item:hover {
    background-color: #374151;
}

/* 工具提示 */
[data-theme="dark"] .tooltip .tooltip-inner {
    background-color: #374151;
    color: #e9ecef;
}

/* 弹出框 */
[data-theme="dark"] .popover {
    background-color: #2d3748;
    border-color: #4a5568;
}

[data-theme="dark"] .popover-header {
    background-color: #374151;
    border-bottom-color: #4a5568;
    color: #e9ecef;
}

[data-theme="dark"] .popover-body {
    color: #e9ecef;
}

/* 面包屑导航 */
[data-theme="dark"] .breadcrumb-item + .breadcrumb-item::before {
    color: #9ca3af;
}

/* 选项卡 */
[data-theme="dark"] .nav-tabs {
    border-bottom-color: #4a5568;
}

[data-theme="dark"] .nav-tabs .nav-link {
    color: #e9ecef;
    border-color: transparent;
}

[data-theme="dark"] .nav-tabs .nav-link:hover {
    border-color: #4a5568;
    background-color: #374151;
}

[data-theme="dark"] .nav-tabs .nav-link.active {
    background-color: #2d3748;
    border-color: #4a5568 #4a5568 #2d3748;
    color: #e9ecef;
}

[data-theme="dark"] .tab-content {
    background-color: #2d3748;
    border: 1px solid #4a5568;
    border-top: none;
}

/* 手风琴 */
[data-theme="dark"] .accordion-item {
    background-color: #2d3748;
    border-color: #4a5568;
}

[data-theme="dark"] .accordion-header .accordion-button {
    background-color: #374151;
    color: #e9ecef;
    border-bottom-color: #4a5568;
}

[data-theme="dark"] .accordion-header .accordion-button:not(.collapsed) {
    background-color: #4dabf7;
    color: #1a1a1a;
}

[data-theme="dark"] .accordion-body {
    background-color: #2d3748;
    color: #e9ecef;
}

/* 功能卡片特殊样式 */
[data-theme="dark"] .feature-card {
    background: linear-gradient(145deg, var(--dark-bg-secondary), #253344) !important;
    border: 1px solid var(--dark-border);
    color: var(--dark-text-primary) !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .feature-card:hover {
    background: linear-gradient(145deg, #253344, var(--dark-bg-tertiary)) !important;
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    border-color: var(--bs-primary);
}

[data-theme="dark"] .feature-card h5 {
    color: var(--dark-text-primary) !important;
}

[data-theme="dark"] .feature-card p {
    color: var(--dark-text-secondary) !important;
}

/* 功能图标 */
[data-theme="dark"] .feature-icon {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white !important;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

/* 统计数字 */
[data-theme="dark"] .stat-number {
    color: var(--bs-primary) !important;
}

[data-theme="dark"] .stat-label {
    color: var(--dark-text-secondary) !important;
}

/* 徽章和标签 */
[data-theme="dark"] .badge {
    background: var(--bs-primary) !important;
    color: white !important;
}

[data-theme="dark"] .badge-secondary {
    background: var(--dark-bg-tertiary) !important;
    color: var(--dark-text-primary) !important;
}

/* 分隔线 */
[data-theme="dark"] hr {
    border-color: var(--dark-border);
    opacity: 0.3;
}

/* 列表样式 */
[data-theme="dark"] .list-unstyled li {
    color: var(--dark-text-secondary);
}

[data-theme="dark"] .list-group-item {
    background: var(--dark-bg-secondary);
    border-color: var(--dark-border);
    color: var(--dark-text-primary);
}

[data-theme="dark"] .list-group-item:hover {
    background: var(--dark-bg-tertiary);
}

/* 通用文本元素修复 */
[data-theme="dark"] p {
    color: var(--dark-text-primary);
}

[data-theme="dark"] span {
    color: inherit;
}

[data-theme="dark"] div {
    color: inherit;
}

/* 图标颜色 */
[data-theme="dark"] .fas,
[data-theme="dark"] .far,
[data-theme="dark"] .fab {
    color: inherit;
}

/* 用户头像 */
[data-theme="dark"] .user-avatar {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
}

/* 导航链接特殊处理 */
[data-theme="dark"] .nav-link.active {
    color: var(--bs-primary) !important;
    background: rgba(99, 102, 241, 0.1);
}

/* 面包屑导航 */
[data-theme="dark"] .breadcrumb {
    background: var(--dark-bg-secondary);
}

[data-theme="dark"] .breadcrumb-item {
    color: var(--dark-text-secondary);
}

[data-theme="dark"] .breadcrumb-item.active {
    color: var(--dark-text-primary);
}

[data-theme="dark"] .breadcrumb-item + .breadcrumb-item::before {
    color: var(--dark-text-muted);
}

/* 工具提示 */
[data-theme="dark"] .tooltip .tooltip-inner {
    background: var(--dark-bg-tertiary);
    color: var(--dark-text-primary);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

/* 弹出框 */
[data-theme="dark"] .popover {
    background: var(--dark-bg-secondary);
    border-color: var(--dark-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .popover-header {
    background: var(--dark-bg-tertiary);
    border-bottom-color: var(--dark-border);
    color: var(--dark-text-primary);
}

[data-theme="dark"] .popover-body {
    color: var(--dark-text-primary);
}

/* 进度条 */
[data-theme="dark"] .progress {
    background: var(--dark-bg-secondary);
}

[data-theme="dark"] .progress-bar {
    background: linear-gradient(135deg, var(--bs-primary), #5855eb);
}

/* 特殊文本类 */
[data-theme="dark"] .text-dark {
    color: var(--dark-text-primary) !important;
}

[data-theme="dark"] .text-white {
    color: var(--dark-text-primary) !important;
}

[data-theme="dark"] .text-body {
    color: var(--dark-text-primary) !important;
}

/* 首页特殊元素强制修复 */
[data-theme="dark"] .hero-title,
[data-theme="dark"] .main-title,
[data-theme="dark"] .page-title {
    color: var(--dark-text-primary) !important;
}

/* 搜索相关元素 */
[data-theme="dark"] .search-form {
    background: transparent;
}

[data-theme="dark"] .search-form .form-control {
    background: transparent;
    border: none;
    color: var(--dark-text-primary);
}

[data-theme="dark"] .search-form .btn {
    background: linear-gradient(135deg, var(--bs-primary), #5855eb);
    border: none;
    color: white;
}

/* 视频相关元素 */
[data-theme="dark"] .video-title {
    color: var(--dark-text-primary) !important;
}

[data-theme="dark"] .video-author {
    color: var(--dark-text-secondary) !important;
}

[data-theme="dark"] .video-stats {
    color: var(--dark-text-muted) !important;
}

/* 统计信息 */
[data-theme="dark"] .stats-card {
    background: linear-gradient(145deg, var(--dark-bg-secondary), #253344);
    border: 1px solid var(--dark-border);
    color: var(--dark-text-primary);
}

/* 侧边栏 */
[data-theme="dark"] .sidebar {
    background: var(--dark-bg-secondary);
    border-right: 1px solid var(--dark-border);
}

/* 内容区域 */
[data-theme="dark"] .content-area {
    background: transparent;
    color: var(--dark-text-primary);
}

/* PDF报告页面样式（深色主题下保持白色背景以便打印） */
[data-theme="dark"] .report-container {
    background: white !important;
    color: #333 !important;
}

[data-theme="dark"] .report-container * {
    background: inherit !important;
    color: inherit !important;
}

[data-theme="dark"] .report-header {
    border-bottom-color: #3b82f6 !important;
}

[data-theme="dark"] .section-title {
    color: #1e40af !important;
    border-left-color: #3b82f6 !important;
    background: linear-gradient(90deg, #eff6ff 0%, transparent 100%) !important;
}

[data-theme="dark"] .info-value {
    color: #1e40af !important;
}

[data-theme="dark"] .stats-table th {
    background: #3b82f6 !important;
    color: white !important;
}

[data-theme="dark"] .progress-fill {
    background: linear-gradient(90deg, #3b82f6, #1d4ed8) !important;
}

[data-theme="dark"] .status-completed {
    background: #dcfce7 !important;
    color: #166534 !important;
}

[data-theme="dark"] .status-partial {
    background: #fef3c7 !important;
    color: #92400e !important;
}

[data-theme="dark"] .status-missed {
    background: #fee2e2 !important;
    color: #991b1b !important;
}

[data-theme="dark"] .summary-box {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%) !important;
    border-color: #3b82f6 !important;
}

[data-theme="dark"] .summary-title {
    color: #1e40af !important;
}

/* 平滑过渡 */
* {
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}